久久久久久久精品成人热小说,亚洲 欧美 激情 小说 另类,亚洲精品国产精华液,激烈 痉挛 抽搐 潮喷 MP4

News

Instructions for using horseshoe shaped soldering iron tips

Release Date:2017-07-19
Instructions for using horseshoe shaped soldering iron tips
The tip of the horseshoe shaped soldering iron has enough heat to melt the welding material of the metal.
For most printed circuit boards, all components need to be placed on the printed side (which we call the top of the board), and then we need to solder the solder pads on the bottom of all boards. The printed circuit board needs to be reversed in order to solder two pads.
The electric soldering iron is heated enough to melt the metal. This means that the soldering iron tip will quickly oxidize after overheating, which means it will oxidize and become dirty when exposed to air! Oxide is insulating, so in order to conduct heat well and perform welding work well, we need to remove the oxide on the soldering iron tip before each welding.
Remember to clean the soldering iron tip like this before each soldering process, as it oxidizes quickly! Only when the soldering iron tip shines like polished silver can you do a good soldering job.
Hold the soldering iron with your usual hand, just like holding a pencil.
Use a clean soldering iron tip to simultaneously touch the solder pad and the wire of the component you want to solder. Leave it there for 1 second to let everything heat up smoothly.
Then add 1mm-3mm solder under the soldering iron tip. The solder that does not touch the soldering head will not melt. Once it touches the soldering head, that is, when it melts, you can add the required solder of 1mm-3mm. Keep the soldering head on the solder pad and wire for an additional 1 second. Pay attention to the rapid cooling and hardening of the solder. This only takes about 1 second. Then you can proceed with the next welding.
展開
最新国产精品自在自线发布| 亚洲精品色午夜无码专区日韩| 欧美疯狂做受XXXX高潮| 国产猛烈高潮尖叫视频免费| 亚洲精品无码成人| 99精品人妻无码专区在线视频区| 贵州AⅤ熟女和妓女| 亚洲AV永久无码精品网站色欲| 老熟妇小伙子hd另类| 少妇中文字幕乱码亚洲影视| 日本无翼乌邪恶大全彩h下拉式| 乱人伦人妻中文字幕无码| 中文在线最新版天堂| 色吊丝AV中文字幕| 东北大坑原始欲续全文下载| 亚洲天天做日日做天天爽| 99久久国产热无码精品免费| 小妖精腰细奶大h侍卫| 征服了同学的贵妇麻麻| 色欲A∨无码蜜臀AV免费播| 人妻を催眠えっちに孕ませるまで| 欧美日韩国产精品| 一本久久精品一区二区 | 黄色视频app下载| 最近2019中文字幕大全视频1| 激情无码人妻又粗又大| 无翼鸟邪恶少女漫画| 最近免费中文字幕中文高清6 | 小俊┅┅快┅┅用力啊| 国精品无码一区二区三区在线蜜桃| 强行开发她的尿孔h| 护士猛少妇色xxxxx猛叫| 成人H视频在线观看| 久久久久黑人强伦姧人妻| 人人爽人人爽人人爽人人片AV| 用力挺进她的花苞| 吉林小伟无套gay| 久久久久人妻一区精品色欧美| 国产AⅤ精品一区二区三区| 亚洲国产精品国自产拍AV| 色多多性虎精品无码AV|